20 Personal Appearance Tips For The Modern Workplace

"The problem with appearance is that it translates to performance," Nicole Williams, career expert at LinkedIn, tells Business Insider. "Even if your boss doesn't think that they're thinking any less of you, they will subconsciously think it."

"When you don't fit in, you're not as accepted and welcomed," says Williams. And at some point, this could hurt your chances of getting a promotion.

In today's workplace, where casual wear is becoming increasingly popular, it can be tricky to understand the rules of appearance. We talked to career and etiquette experts to get a better idea. Below are 20 rules every professional should follow:

1. Understand what's appropriate in your industry.

"Everyone draws their lines differently," says etiquette coach Barbara Pachter. "For example, you may be able to wear shorts, but not cutoffs. If your company has a dress code, follow it."

2. Make sure your clothes fit.

"If your clothes are too big or too small, they are not going to look good. Ensuring a proper fit applies to everything you are wearing," says Pachter, and that includes clothing, shoes, and accessories. "One interviewer said he was distracted by a man's short tie."

3. Don't be too sexy.

Not only is wearing inappropriate clothing distracting, it can also give off an inaccurate impression. Avoid too-short hemlines, too-tall heels, plunging necklines, and exposed under garments.

"A lot of women are oversexualized in the office," says Williams. "You can wear a V-neck shirt, but make sure you keep your legs covered. People end up discrediting themselves by looking too provocative."

Pachter agrees: "What do you want to be remembered for? What you wore or what you said?"

4. Wear glasses that fit.

Make sure your glasses fit properly and aren't sliding down your nose. You don't want to be playing with them all the time, says Pachter. "This becomes distracting."

5. Dry your hair.

Never leave your house with wet hair, warns Williams. It makes you look like you don't have your life together, which translates to not having your career together.

6. Pay attention to your bag.

You don't want your personal things jutting out of your purse or briefcase. Keep your bag clean on the inside, especially if it doesn't have a zipper, which allows others to catch a glimpse inside from time to time.

Williams also advises professionals not to wear knapsacks because it looks "too collegiate."

7. Don't wear strong perfume.

"Anything that anyone else can smell is not good," says Williams. To get an idea of whether someone can smell you or not, ask someone you trust.

8. Wearing nude pantyhose is hip.

Ever since Kate Middleton started wearing pantyhose in public, it quickly became stylish again. "It gives you a more finished look," says Pachter.

9. Wear well-kept, polished shoes.

"One recruiter told me the first thing he notices about a candidate is his or her shoes," says Pachter. "Make sure your shoes are polished and in good condition."

10. Avoid ankle socks with slacks.

When you cross your legs and the pants slightly lift up, no skin should be showing, says Pachter. Your socks need to be an appropriate length.

11. Get regular pedicures.

Williams tells us one of her biggest pet peeves is when women wear open-toed shoes without getting pedicures. "If you're going to show your toes, make sure your toes are well-groomed," she says.

12. Don't over-accessorize.

Accessories are meant to complement your outfit, not overpower it. "I once met a woman who had a ring on every finger," Pachter tells us. "You couldn't look at anything else."

13. Your jewelry shouldn't make noise.

It's really distracting when someone's dangly bangles make noises when they move their arms, says Williams.

14. Pay attention to your watch.

"When I ask the participants in my etiquette classes to name the one accessory that they notice most on both men and women, the watch is the most common answer," says Pachter.

How do you know what style will look good on you? Determine what kind of face shape and features you have. Then find others with similar features who are already sporting mustaches and beards, and experiment with their cut and style.

16. Grow facial hair on a weekend or vacation.

You want to look like you've grown hair on purpose instead of just being lazy and not shaving, says Causgrove.

Williams advises using a weekend or vacation time to grow beards out, because "spotty beards make men look like 18-year-olds."

17. Trim your beard.

Facial hair needs to be kept trim and tidy to maintain a professional look. Causgrove advises doing some research on the proper device. Electric razors can be good for short, trimmed beards, and scissors are better for mustaches, he says.

18. A goatee is rarely a good idea.

Any hair that's under your lower lip that isn't a beard is not a good idea, says Pachter. "Do you want to be the only person [with it]? It may work for you, it may work against you, but you need to make that decision for yourself," she warns.